public IHttpActionResult PutRole(int id, Role role)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != role.Id)
            {
                return(BadRequest());
            }

            try
            {
                _RDB.Edit(role);
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!RoleExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(StatusCode(HttpStatusCode.NoContent));
        }